Home / 20,100.33-30,166.89-10,242.42

Finding the Fourth Proportional to 20,100.33, 30,166.89 and 10,242.42

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Solution

The fourth proportional to 20,100.33, 30,166.89 and 10,242.42 is: 15,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.33 : 30,166.89 = 10,242.42 : x
  2. Step 2: Convert to fraction form
    20,100.33/30,166.89 = 10,242.42/x
  3. Step 3: Cross multiply
    20,100.33x = 30,166.89 × 10,242.42
  4. Step 4: Simplify right side
    20,100.33x = 308,981,957.47
  5. Step 5: Solve for x
    x = 308,981,957.47/20,100.33
  6. Step 6: Final answer
    x = 15,371.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.